Smoke-consuming furnace



(No Model.) 7 a I y A. BERNEY.

SMOKE QqnsUmme FURNACE. No. 248,007. I Patented Oct. 11,1881.

"FIG; I.

06o 0900a ooogaoooco WITNESSES". INVENTEIF\= ALFRED BERNEY, or eosron, MASSACHUSETTS, ASSIGNOR COMPANY, on HARTFORD, CONNECTICUT.

to THE GLO-BE SMOKE-CONSUlVIlNGFURNACE.

SPECIFICATION forming To all whom it may concern:

Be it known that I, ALFRED BERNEY, a citizen of the. United States, residing at the city of Boston, in the county of Suffolk and State 'of Massachusetts, have invented certain new and useful Improvements in Smoke-(Jonsu min g Furnaces; and I do hereby declare the following to be, a full, clear, and exact descrip tion of the invention, such aswill enable others skilledin the artto which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

Myinvention relates to furnaces in which hot air and steam are supplied to the fuel to assist in its combustion; and the object is to prevent the chilling ofthe fire, and also to preventsmoke with the fuel.

The invention consists in forming at the rear of the furnace a lining connected with a diaphragm of fire-brick or other refractory material, which retains the heat and imparts'it to the air and products of combustion, and thereby assists in heating the air and consuming the fuel. --In said lining are arranged a number of vertical perforations connected to a horizontal opening in the diaphragm and communicating with one or both sides or the rear of the furnace with openings, into which steam-jet pipes protrude and form jets by which air is drawn or forced in, and after mingling with the air, which has been now highly heated, underthe gratebars and into the fire on the grate, all of which will be more fully described hereinafter.

In the drawings, Figure I is a longitudinal vertical section of a furnace with my improvements attached. Fig. II is a cross-section of the same on line 00 0c.

In the drawings, A is the shell of the boiler, and 13 represents the furnace, the flues O in the ordinary manner, In the furnace are arranged the grate-bars D, and below them is the ash-pit E, which is provided with dampers or doors 6, to be closed whenvthe jet is on. At the rear side of this furnace is arranged a lining, F, extending at its upper side and connected to a diaphragm, G. This lining and diaphragm are made of fire-brick or other and gases from escaping, but to consume them connected with Application filed Mach 2 2, 1881. (No model.) I

refractory material, and is provided with a number of vertical perforations, f, opening into the ash-pit below the grate-bars. These perforations connect with a horizontal or inclined opening, g, in the diaphragm. Into this opening one or more openings, on one or both sides of the furnace, lead by a thimble, h, through which a steamjet pipe, t, provided with suitable stop-cocks or valves, protrudes, and by part of Letters; Patent o. 248,007, dated October 11,,1s 1 I which air is drawn in and forced through the perforations into the ash-pit.

If desired, one or more openings, k, may be arranged through the front water-legs of the furnace, and into them one or more steam-jets,

1, may protrude to draw in air and force it with the steam into the ash-pit. One or both of these steam-jets may be used at the same time, and, if desired, perforations may be made into the furnace through the lining, as shown at m, by which hot air and gases may the furnace and mingled with fresh atmospheric air and be forced into the ash-pit, thus causing a reverberatory action ofair and steam, by which the smoke and gases'will be entirely be drawn from consumed. The air in passing through the lin- 5 111g, which is "cry hot, becomes highly heated and assists in decomposing the steam, which becomes highly superheated.

If desired, the steam-jet I may be bent downward, as shown by the dotted lines, to draw in hot air from the furnace as well as from the atmospheric air.

I am aware that air and steam have been injected into the furnaces through perforated diaphragms and linings, surface of the fuel, by which the ened and lessened in intensity, and if strong efiough may be extinguished. I am also aware that cold air has been admitted under the grate fire is dampbut upon theupper from the ash-pit; butthis has a tendency to chill or cool'the fires. I therefore do not claim any such devices; but,

Having thus described my invention, what I claim as new is- 1. In a furnace, a lining constructed of refractory material and provided with a series of vertical openings connected to one or more openings in an inclined diaphragm, and one or more steam-jets for forcing hot air and steam into the ash-pit, substantially as specified.

2. In afurnace, acornbined lining at the rear side of the furnace and inclined diaphragm provided with openings extending longitudinally through them, and connected with the 5 ash-pit below the grate, and having one or more steam-jets protruding into said openings at the sides or ends, substantially as and for the purpose set forth.

- 3. In a furnace, the combination of alining, F,'and diaphragm Gr, having longitudinallyarranged openings fg, connected to the atmosphere by one or more openings h k, into which steam-jets i l protrude, to draw in and force hot air and steam into the ash-pit under the 15 grate, substantially as shown and described.

4. In a furnace, the combination of the comhined lining and diaphragm F G, having 1ongitudinal openings fg, and openings m, with the steam-jetsi l, and openings h 7a through the Water'legs of the furnace for forcing a com- 20 bined steam and hot-air blast into the ash-pit under the grate, all arranged substantially as shown and set forth.

In testimony whereof I aflix my signature in presence of two witnesses.

ALFRED BERNEY.

Witnesses:

S. N. BERNEY, Rom. GERARD. 

